A Comparison of Gas Velocity Measurement Techniques in the Doorway of a Full-Scale Enclosure Fire
Rodney A. Bryant
Gas velocity measurements were conducted in the doorway of an enclosure containing a natural gas fire. Two independent measurement techniques, Stereoscopic Particle Image Velocimetry (SPIV) and bi-directional impact-pressure probes, were utilized for comparison - the first such comparison for a fire-induced flow in a full-scale structural fire. Gas velocities inferred from the bi-directional probe measurements were consistently greater than SPIV measurements in a region of the flow between the door sill and the flow interface. The comparison reveals that a measurement bias exists in the bi-directional probe technique. Estimates of the bias can be inferred from the results.
A Comparison of Gas Velocity Measurement Techniques in the Doorway of a Full-Scale Enclosure Fire, Fire Safety Journal, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=900156
(Accessed December 2, 2023)